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Paul O. Johnson giving a presentation near a research plot.

Paul O. Johnson Retires After Dedicated Career in SDSU Extension

June 08, 2022

Paul O. Johnson, SDSU Extension Weed Science Coordinator and Northeast Research Farm Coordinator, is retiring after a dedicated 33-year career supporting the people of South Dakota in his role at SDSU Extension.

A close up of prickly Russian thistle

Prickly Russian Thistle

Publications that provide introductory and expanded information on the notorious invasive plant, prickly Russian thistle.

Spring Dandelion Control In Soybeans

Dandelion has become much more of a problem as farming practices have changed. Less tillage and increased use of glyphosate resistant crops along with reduced use of residual herbicides have allowed some perennial weeds such as dandelion to prevail.

A small pile of harvested non-gmo soybeans on a grey cloth.

Want a Premium Price? Weed Control In NON-GMO Soybeans

Many emotions set in on farmers that hear the word “non-GMO”, but it could help them in times like today when prices are low for many farm products in South Dakota.

Group of farmers and ranchers attending a drought meeting.

SDSU Extension to Host Drought Management Meetings

April 29, 2022

SDSU Extension will host drought management meetings across South Dakota May 10-12.

A sprawling, planted field with young crops emerging

Crop Rotation in Farm Management 

Crop rotation has long been considered an important farm practice. In 2013 producers had to stray from their well thought out crop rotations when the winter wheat crop in South Dakota failed.

SDSU Research Shows Effects Of Volunteer Corn In Corn And Soybeans

In 2007, researchers at South Dakota State University indicated that volunteer corn is much less competitive in corn than soybean. The South Dakota study (Alms et al. 2007) evaluated the full season effect of a range of volunteer corn densities (800-14,000 plants/acre) on both corn and soybean and reported yield losses that ranged from 0% to 13% in corn and 0% to 54% in soybean.

Green winter wheat field

Crop Hour

SDSU Extension will deliver a series of virtual Crop Hour webinars starting January 9 through March 7, 2024, every Tuesday, Wednesday and Thursday from 10:00 a.m.-11:00 a.m. CST.

A medium-sized shrub with many upright stems next to a white shed

Woody Weeds: Tatarian Honeysuckle

Tatarian honeysuckle (Lonicera tatarica) was brought to North America from Asia in the mid-18th century for ornamental uses. In South Dakota it was also used as a windbreak species until the 1980s.